Numerical simulation and experimental test of unsteady flow field for oscillating vanes gust generator in high-speed wind tunnel

ZHANG Ying; LIU Nan

doi:10.11729/syltlx20210093

Volume 36 Issue 5

Oct. 2022

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Article Navigation > Journal of Experiments in Fluid Mechanics > 2022 > 36(5): 83-89

ZHANG Y，LIU N. Numerical simulation and experimental test of unsteady flow field for oscillating vanes gust generator in high-speed wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2022，36（5）：83-89. doi: 10.11729/syltlx20210093

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Numerical simulation and experimental test of unsteady flow field for oscillating vanes gust generator in high-speed wind tunnel

doi: 10.11729/syltlx20210093

ZHANG Ying^,,
LIU Nan

Aeronautical Science and Technology Key Lab for High Speed and High Reynolds Number Aerodynamic Force Research, AVIC Aerodynamics Research Institute, Shenyang　110034, China

Received Date: 2021-08-16
Accepted Date: 2022-01-24
Rev Recd Date: 2022-01-05
Publish Date: 2022-10-01

Abstract

Abstract

Gust generator is the important equipment of the gust test system. In order to reduce the risk of development, a set of oscillating vanes gust generator suitable for 0.6 m continuous transonic wind tunnel was designed and processed. The self-developed ENSMB software was used to numerically simulate the unsteady flow field for the generator, and the formation mechanism and distribution characteristic of the disturbance velocity field downstream of the generator were analyzed. The research focused on the influence of the oscillating frequency and maximum oscillating amplitude of gust vanes on the gust velocity amplitude, and compared the results with the experimental data. The results show that the calculated results are in good agreement with that obtained by experiment. The gust velocity field downstream is caused by the vortex shedding from the vane, and changes periodically and sinusoidally with time. The gust velocity amplitude increases first with the increase of the maximum oscillating amplitude of gust vanes. When the maximum oscillating amplitude is 10°, the gust velocity amplitude reaches the maximum, and then there is no obvious change. This is probably due to the stall caused by the maximum oscillating amplitude increase. The frequency change only affects the frequency of the gust velocity, but has no obvious influence on the gust velocity amplitude.
- oscillating vanes gust generator,
- gust velocity field,
- oscillating frequency,
- maximum oscillating amplitude,
- unsteady

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References(16)

References

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